Introduction to statistics Instructor: Dr. Scott Crawford Email: [email protected] Class: MWF 11-11:50am CR 129 Office: Ross 333 Office Hours: MWF 1pm Click here and look to the bottom of the page for office hours for me and the TA’s

Course Description: Statistics is the tool to answer scientific questions given data. Your goal is to read scientific claims and understand the limits of their research, interpret what the results mean, and demonstrate the ability to analyze their data. The main tools taught in this class are confidence intervals and hypothesis tests (with p-values). The topics include descriptive statistics, one sample mean and proportion, two sample means and proportions, regression, and chi-squared tests.

Text: There is no required textbook. Any introductory statistics book will cover the same material as this class. There are videos of instruction and notes that can be used. There is a required Webassign code. You can purchase a code through the bookstore or direct from Webassign.net. The access key (class code) is uwyo 3866 5898 to access the class. Details are listed below.

Webassign: You must purchase an access code. The bookstore sells them, or you can purchase them direct from http://www.webassign.net At the website on the right hand side below the log in button is a link that says “I Have a Class Key”. Click on that link and then put in the class key uwyo 3866 5898. Then create your Webassign account (if you have made an account in another class you are welcome to use it if you want). When you reach the home page you should notice where My Assignments is located.

My assignments: This shows the homework assignments. They are due every week on Wednesday at 11:59 pm. If you are late you may extend the homework deadline by 1 day for a 20% penalty of the points you earn from then on. (This is done automatically within Webassign). You may have three extensions for up to one week after the deadline. An extension without the penalty requires a University Excuse can cover more than half the week that the assignment was due. It is considered your responsibility to begin the homework early enough to manage computer problems, power outages, content problems, illness, or personal struggles.

Each question can be submitted 5 times. That means there is no excuse for not being able to get the correct answers – if you have missed a question 3 times you should find help. There are TA’s, discussion boards, and office hours as well as working with other students. In the announcements you will notice videos which you may find helpful. The first assignment is due in the first week and it is your responsibility to make sure we can find solutions to any problems before the assignment is due. We have found that students who work together tend to do better. Do not just guess. The answer to question 1 on the homework (you know it’s only there to force you read this syllabus) is “teach”. That’s because teaching this material to other students is a fantastic way to learn it. Believe it or not you can actually teach yourself by explaining what you don’t understand to someone else. The discussion board is a great place to ask questions about the homework, concepts, or share frustrations.

Grades: This part of Webassign will have your current grade. At the beginning it will say you are getting 0, but as assignments are completed it will do a better job of predicting.

Participation: Participation requires you attend the labs each week. The Monday/Wednesday labs meet only on Wednesday, while the Tuesday/Thursday labs meet only on Tuesday. To earn your participation points you need to attend your lab each Tuesday or Wednesday. The labs are graded as complete/incomplete. We will drop your lowest two lab scores (which means you are allowed to forget two times).

Exams: The exams are online through the Webassign Program. Toggling to any website except Webassign during the exam is cause for receiving a zero on the exam. The tests are cumulative, timed, and closed book, but you will be allowed a study sheet for the exams (two sheets for the final). Calculator: Any calculator is allowed on the exam that does not have wireless communication. Test questions attempt to not give an advantage to students who have fancier calculators.

Exam 1: February 20, 21, or A: 90-100 22 B: 80-89 Exam 2: April 3, 4, or 5 C: 70-79 Final Exam: May 8, 9, or 10 D: 60-69 F: Below 60 Grading: Participation 10% Homework 20% Exam 1 20% Exam 2 25% Final Exam 25%

There is no extra credit or extra projects in the class. If you are concerned about what grade you will need on the final to get a particular grade I can send you a calculating sheet. By federal law I cannot send grade information through email. Rounding grades: I encourage students to complete the teacher evaluation. For students who complete the evaluation I can round their grades up 1%. I do not round anything beyond that. And it doesn’t make sense to – no matter where I draw the line someone will be just below it.

Incompletes: A grade of “incomplete” is only an option for students who have completed more than 2/3 of the class (after the second exam) and have faced unexpected, uncontrollable, and debilitating personal circumstances. An incomplete can help a student complete the class later to manage a sudden disability.

Disability Statement: If you have a physical, learning, sensory or psychological disability and require accommodations, please let me know as soon as possible. You will need to register with, and provide documentation of your disability to University Disability Support Services (UDSS) in SEO, room 330 Knight Hall .Academic Honesty: The University of Wyoming is built upon a strong foundation of integrity, respect and trust. All members of the university community have a responsibility to be honest and the right to expect honesty from others. Any form of academic dishonesty is unacceptable to our community and will not be tolerated. Cheating on the tests will result in a failing grade and referral to the academic integrity office.

The instructor may make changes to the syllabus as the course proceeds. If necessary, these changes will be announced in Webassign.

Office Hours: There are lots of opportunities. There is a link below that shows you a table of times you can meet with someone. We offer lots of office hours so that students can feel supported the way you need. If office hours change you’ll see the table in the link adjust.

There is also tutoring available at the STEP Tutor Center. STEP is located in Coe Library. Sessions are drop in (no appointments) and are 30 minutes in length. Students who seek academic help in this class tend to perform 15-20% better than students who do not. Please visit the STEP Tutor Schedule for days and times: www.uwyo.edu/step.

List of times and places for tutoring or office hours: http://www.uwyo.edu/crawford Course Outline Week 1 Syllabus Week 9 Testing with sigma unknown Introduction to Webassign t-tables Testing two means, Jan 23 Access the homework Mar 16 matched pairs, Independent must Jan 25 HOMEWORK 1 due Mar 22 add variances HOMEWORK 7 due

Week 2 Stat/param, cat/num mean/median, Week 10 Test for one proportion, CI for p boxplots Std dev, notation, mean vs CI for two proportions Jan 26 median A and B, A or B, A | B Mar 23 Pooling proportions, Ho for Feb 1 Bayes theorem Mar 29 p1=p2 HOMEWORK 2 due HOMEWORK 8 due

Week 3 Normal, density curves, z-table Week 11 P(x>3), P(x>=3), highest 5%, Test 2 Feb 2 z-bridge, Middle 95%, Mar 30 April 3, 4, or 5 Feb 8 further than 5 from mean Apr 5 HOMEWORK 3 due Week 4 Distribution of xbar Week 12 Lurking variables Sources of Bias P(xbar>3), p(x>3), Sampling Schemes Feb 9 highest 5% of xbars Apr 6 Experimental terms Feb 15 HOMEWORK 4 due Apr 12 Sampling Schemes, Seven pitfalls HOMEWORK 9 due

Week 5 Week 13 Tables, Expects using independence Feb 16 Test 1 Apr 13 Chi-squared test of independence Feb 22 February 20, 21, or 22 Apr 19 E>5, df, 2x2 chi-squared = test of two proports HOMEWORK 10 due Week 6 Ho, Ha, 7 steps of a hypothesis, Week 14 Chi-squared Goodness of fit p-value, Alpha, beta, power, Matching Uniform/Normal Feb 23 confidence, Hypothesis tests, Apr 20 distributions Mar 1 Making Conclusions Apr 26 HOMEWORK 11 due HOMEWORK 5 due

Week 7 Confidence Intervals Week 15 Regression Proper statements on confidence R, R2, When R=0 Mar 2 HOMEWORK 6 due Apr 27 Y=bo+b1x, prediction, Mar 8 May 3 Test H0:B1=0, reading output Residuals, 5 assumptions HOMEWORK 12 due Week 8 SPRING BREAK Week 16 No participation required. May 4 Final Mar 9 No homework due this week May 10 May 8, 9, or 10 Mar 15 The next homework is still available